System Reference Document

HURTING PEOPLE 

Now we come to the meat of it, and all the lovely little nitty-gritty details. The default Attack Action is, unsurprisingly, to Attack – whether it be with your bare hands, a melee weapon, a gun, or a thrown weapon. You do so by making an Attack Roll. 

Roll 2d6 and add the appropriate Skill Bonus. If your result is equal to or greater than the target's Defense, your Attack hits and deals damage

Characters can also use Attack Actions for other things, besides attacking.